After a two-year romance, Ashton Kutcher and Demi Moore tied the knot Saturday night in what seems to be a last-minute ceremony.

People magazine's Jess Cagle told us the Kabbalah ceremony took place at Demi and Ashton's newly-renovated Beverly Hills home. "Demi had a friend of hers help her plan the wedding," Cagle said. "Her own chef was the caterer. There were not a lot of people out there who knew this was happening and could leak the information."

"The ceremony was a Kabbalah ceremony," Cagle continued. "Which is basically a traditional Jewish wedding, but it is Orthodox."

The 100 guests reportedly included Demi's former husband, Bruce Willis, and their three daughters. Also present was Moore's "Charlie's Angels" co-star Lucy Liu and Ashton's "That 70's Show" co-star Wilmer Valderrama.

Ashton and Demi had flashbulbs popping and tongues wagging ever since they made their first appearance as a couple at the "Charlie's Angels: Full Throttle" premiere in 2003. And despite their age difference (Kutcher is 27, Moore is 42), Kutcher recently revealed to "Extra" the secret of their romance.

"I can't be with somebody unless they make me laugh," Kutcher had said. "And Demi makes me laugh every single day -- people have no idea how funny she is."

The wedding comes after months of rumors that Demi was pregnant. Other past rumors claimed the two had eloped.